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| 1 | Progress of the key materials for organic solar cells显示文摘Organic solar cells have attracted academic and industrial interests due to the advantages like lightweight,flexibility and roll-to-roll fabrication.Nowadays,18%power conversion efficiency has been achieved in the state-of-the-art organic solar cells.The recent rapid progress in organic solar cells relies on the continuously emerging new materials and device fabrication technologies,and the deep understanding on film morphology,molecular packing and device physics.Donor and acceptor materials are the key materials for organic solar cells since they determine the device performance.The past 25 years have witnessed an odyssey in developing high-performance donors and acceptors.In this review,we focus on those star materials and milestone work,and introduce the molecular structure evolution of key materials.These key materials include homopolymer donors,D-A copolymer donors,A-D-A small molecular donors,fullerene acceptors and nonfullerene acceptors.At last,we outlook the challenges and very important directions in key materials development. | Yang Tong Zuo Xiao Xiaoyan Du Chuantian Zuo Yuelong Li Menglan Lv Yongbo Yuan Chenyi Yi Feng Hao Yong Hua Ting Lei Qianqian Lin Kuan Sun Dewei Zhao Chunhui Duan Xiangfeng Shao Wei Li Hin-Lap Yip Zhengguo Xiaol Bin Zhang Qingzhen Bian Yuanhang Cheng Shengjian Liu Ming Cheng Zhiwen Jin Shangfeng Yang Liming Ding | 2020 | Science China Chemistry2020，63，6： | 15 |
| 2 | A high-performance narrowband high temperature superconducting filter显示文摘Recent development of a high-performance narrowband high-temperature superconducting (HTS) filter is presented. A 10-pole quasi-elliptic function response filter with two pairs of transmission zeros (for high selectivity), which has a center frequency of 2.185 GHz and a 3 dB bandwidth of 10 MHz (a fractional bandwidth of 0.45%), is introduced. The filter was fabricated on a 40 mm×16 mm×0.5 mm MgO wafer with double-sided YBCO films. The measured results show that the filter has 0.15 dB insertion loss at the center of the passband and a return loss better than -22.5 dB at a temperature of 67 K.Band edge steepness reaches over 28.3 dB/MHz at both the low and high frequency edges. The out-of-band rejection is over 78 dB at 8 MHz away from the center frequency and close to 100 dB in a wideband range. | CUI Bin ZHANG XueQiang SUN Liang BIAN YongBo GUO Jin WANG Jia LI ChunGuang LI Hong ZHANG Qiang HE YuSheng | 2010 | Chinese Science Bulletin2010，55，14： | 6 |
| 3 | An L-band HTS duplexer with improved performance显示文摘An L-band HTS duplexer with improved performance for communication applications has been developed.This is an improved version of the duplexer previously developed by our group.The duplexer was composed of a T-junction and two channels.Each channel has a 10-pole quasi-elliptic function bandpass HTS filter with a bandwidth of 27 MHz,and center frequencies at 1200 MHz and 1260 MHz.To achieve higher performance,especially a good balance between selectivity and flat group delay,the two pairs of transmission zeros from the two filters were reassigned so that one pair is used for high selectivity and the other for flat group delay.To reduce the influence of parasitical coupling,new coupling structures were developed in the simulation process.The duplexer was fabricated on a 2 inch diameter,0.5 mm thick LaAlO3 wafer with a double-sided YBCO film.The measured results showed a very high performance:a mid-band insertion loss of 0.2 dB,a return loss better than-14 dB,a shape factor better than 1.4:1,an out-of-band rejection of better than 70 dB in a wide frequency range up to 3 GHz and excellent isolation(higher than 80 dB) between the two channels.In addition,the frequency band 5 ns group delay variation is over 10.5 MHz(38.7% of 1 dB bandwidth). | Jia Wang Qiang Zhang Bin Cui Jin Guo YongBo Bian XiaoFeng He ChunGuang Li XueQiang Zhang Hong Li WuXia Li et al. | 2010 | Chinese Science Bulletin2010，55，31： | 2 |
| 4 | A minia- turized HTS microwave receiver front - end subsystem for radar and communication applications 显示文摘 | Bian Yongbo Guo Jin Gao Changzheng | 2010 | Superconduc- tivity and Its Applications2010，470，15： | 1 |
| 5 | A VHF band HTS filter based on modified single-spiral resonators for radio astronomy application显示文摘A 10-pole quasi-elliptic bandpass filter (BPF) with a relatively wide passband in the very high frequency (VHF) band was designed and fabricated using YBCO thin films deposited on both sides of a LaAlO3 substrate. Single-spiral resonators were modified to generate strong coupling and reduce the parasitic coupling. We analysed the coupling polarities between the modified resonators. Two pairs of attenuation poles were introduced in the filter for sharp cut-off response. The measurements showed that the filter has a centre frequency of 255.8 MHz, fractional bandwidth of about 12.3%, insertion loss of smaller than 0.265 dB, and the return loss in the passband of better than 17.5 dB, in good agreement with computer simulations. | LI Chao SUN Liang WANG Jia BIAN YongBo YU Tao LI Fei LI ChunGuang LI Hong GU ChangZhi HE YuSheng | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，5： | 0 |
| 6 | Appropriate Metabolic Energy, Crude Protein, Calciumand Available Phosphorus Levels of Diet for BlackMuscovy Duck at 43-91 Days of Age显示文摘[Objective] The paper was to study the effects of diet formulation with different nutrition levels on growth and slaughter performance of black muscovy duck at the age of 43-91 days. [Method] Totally 288 individuals of 43-day-old black muscovy duck were randomly divided into nine treatments, four repeats each treatment and eight ducks each repeat. Using L9(34) orthogonal experiment design(four factors and three levels),three metabolic energy levels(12.32, 12.72, 13.12 MJ/kg), three crude protein levels(14%, 16%, 18%), three calcium levels(0.6%, 0.8%, 1.0%)and three available phosphorus levels(0.30%, 0.45%, 0.6%) were designed, and a total of nine feeding groups(C1-C9) were designed according to different nutritional levels. Through combination of feeding test(49 d) and metabolic test(pre-test 4 d and formal test 3 d), the growth performance,meat performance and apparent nutrient digestibility of ducks were determined. [Result] The ducks in experimental group C2 had the highest average daily gain, the lowest feed gain ratio, the largest body oblique length, chest width, chest depth and tibia length, which had significant or ex-tremely significant differences with other groups(P<0.05 or P<0.01). The slaughter rate, semi-eviscerated rate, eviscerated rate and meat quality of ducks in C2 group were higher(P<0.05). The apparent digestibility of crude protein and dietary metabolic energy in C2 group were 88.68% and63.07%, respectively, both were significantly or extremely significantly higher than the other groups( P<0.05 or P<0.01), while the interaction effect of calcium and phosphorus level on apparent digestibility was not obvious. [Conclusion] Under the experimental conditions, the suitable metabolic energy, crude protein, calcium, available phosphorus and total phosphorus levels of 43-91 days old black muscovy ducks were 12.32 MJ/kg,16.10%, 0.92%, 0.45% and 0.68%, respectively. | Zhang Ling Gu Wenjie Zhang Kai Duan Xiujun Qin Haorong Bian Youqing duan yongbo | 2018 | Animal Husbandry and Feed Science2018，10，4： | 0 |
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